achondrite

achondrite

(ay-kon -drÿt) Any of a class of stony meteorites that lack the characteristic chondrules of the chondrites. They are usually more coarsely crystallized than the chondritic stones and are more similar chemically and mineralogically to some terrestrial rocks. They contain very little iron and nickel. Achondrites resemble volcanic rocks and are thought to be products of large-scale melting on their parent bodies, i.e. they are differentiated or reprocessed matter. See also HED meteorites; SNC meteorites.

All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.